I recently bought a really nice, stock '91 NSX, and am planning out some modifications and would like input from you guys that have done it before. Normally, I'm not a "mod" guy; I've had a GT3 for a while, that I've only added a center muffler delete, and have no further plans. I had a 993 long ago that I made more and more into a dedicated track car, but then it became an awful street car. With the NSX, there are a few things I'd like to change with an eye on keeping it a great street car. I have driven 2 other NSX's with mods that I really like. The first is a '91 with 6spd conversion, 4.23 final drive, LWF, and headers. The second is a '91 with JDM 5spd, LWF, and a supercharger. I've searched and found old threads on these setups in different places, but would like to see what the current thought is. Either route I go, I will do headers/exhaust/LWF.
Driving the first car, I like the idea of staying NA. I definitely like the lower gear spread of the 6spd gears; my understanding is that the first 4 gears of the JDM 5 spd and 6 speed are very similar, with 5th (5spd) and 6th gears, respectively, being close too. I'm a little concerned of the higher cruising rpm's; right now 80 mph is about 3400 rpm for me, and I was told that the 4.23 raises that about 400rpm. Is this accurate? Is that extra obtrusive with headers/exhaust? So, option 1 for me is JDM short gears and 4.23.
After driving the second car, I was really impressed with the power. This car had the JDM short gears, and the stock 4.06 final drive, and a supercharger set up for 9psi boost. To me, the gearing felt really good, and I don't know if the 4.23 would be just right, or too much? From what I've seen, most supercharged cars fizzle out after a few laps on track, but I club race with a dedicated race car, so I really don't plan to track the NSX. I want a fun car for carving up twisty back roads.
The last change is suspension. I bought a set of Advan RSII's with Dunlop's, and that had more rub than I can live with at stock height, and that set off thinking about suspension changes. My original plan was to go to Bilstein shocks set to the lower height, and keep everything else stock. Now, I'm also considering a type S setup, and a KW variant 3 setup.
What do you guys think? Thanks in advance for your help!
David
Driving the first car, I like the idea of staying NA. I definitely like the lower gear spread of the 6spd gears; my understanding is that the first 4 gears of the JDM 5 spd and 6 speed are very similar, with 5th (5spd) and 6th gears, respectively, being close too. I'm a little concerned of the higher cruising rpm's; right now 80 mph is about 3400 rpm for me, and I was told that the 4.23 raises that about 400rpm. Is this accurate? Is that extra obtrusive with headers/exhaust? So, option 1 for me is JDM short gears and 4.23.
After driving the second car, I was really impressed with the power. This car had the JDM short gears, and the stock 4.06 final drive, and a supercharger set up for 9psi boost. To me, the gearing felt really good, and I don't know if the 4.23 would be just right, or too much? From what I've seen, most supercharged cars fizzle out after a few laps on track, but I club race with a dedicated race car, so I really don't plan to track the NSX. I want a fun car for carving up twisty back roads.
The last change is suspension. I bought a set of Advan RSII's with Dunlop's, and that had more rub than I can live with at stock height, and that set off thinking about suspension changes. My original plan was to go to Bilstein shocks set to the lower height, and keep everything else stock. Now, I'm also considering a type S setup, and a KW variant 3 setup.
What do you guys think? Thanks in advance for your help!
David